A process for treatment and recovery of spent potliner (SPL)

Conference · Tue Oct 01 00:00:00 EDT 1996

OSTI ID:372100

Adrien, R J; Besida, J; Pong, T K; O`Donnell, T A; Wood, D G; Covey, G H ^[1]; Giansiracusa, J J; Price, D E ^[2]

---

1. Univ. of Melbourne, Parkville, Victoria (Australia). Dept. of Chemical Engineering
2. DEPCO-TRH Pty. Ltd., Melbourne, Victoria (Australia)

Spent potliner (SPL) is classified as a hazardous waste as it contains cyanides and high levels of fluorides. This paper describes a novel process for the conversion of SPL at near ambient temperatures for the recovery of useful products and a benign residue. The initial treatment of crushed SPL removes over 90% of the cyanide and a large percentage of the fluoride. By appropriate selection of the chemical species and wash conditions aluminum fluoride and other fluorides are effectively recovered in subsequent stages. After this treatment by a series of chemical washes the residue produced is a carbonaceous material containing only carbon and brick fragments, i.e. refractory aluminum compounds.

• OSTI ID: 372100
• Report Number(s): CONF-960202-; ISBN 0-87339-312-0; TRN: IM9641%%177
• Resource Relation: Conference: Annual meeting and exhibition of the Minerals, Metals and Materials Society (TMS), Anaheim, CA (United States), 4-8 Feb 1996; Other Information: PBD: 1996; Related Information: Is Part Of Light metals 1996; Hale, W. [ed.] [Anglesey Aluminum Metal Ltd., North Wales (United Kingdom)]; PB: 1304 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ALUMINIUM
SMELTING
MATERIALS RECOVERY
HAZARDOUS MATERIALS
WASTE PROCESSING
FLOWSHEETS
CYANIDES
CALCIUM FLUORIDES
ALUMINIUM FLUORIDES
CARBONACEOUS MATERIALS
CRUSHING
AQUEOUS SOLUTIONS
WASHING
INORGANIC ACIDS
PRECIPITATION
FILTRATION
X-RAY DIFFRACTION